21032086173 has 16 divisors (see below), whose sum is σ = 32090593920. Its totient is φ = 12002697216.

The previous prime is 21032086139. The next prime is 21032086211. The reversal of 21032086173 is 37168023012.

It is not a de Polignac number, because 21032086173 - 2⁶ = 21032086109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21032086073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 635040 + ... + 667337.

It is an arithmetic number, because the mean of its divisors is an integer number (2005662120).

Almost surely, 2^21032086173 is an apocalyptic number.

It is an amenable number.

21032086173 is a deficient number, since it is larger than the sum of its proper divisors (11058507747).

21032086173 is a wasteful number, since it uses less digits than its factorization.

21032086173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303156.

The product of its (nonzero) digits is 12096, while the sum is 33.

The spelling of 21032086173 in words is "twenty-one billion, thirty-two million, eighty-six thousand, one hundred seventy-three".